Question

Which of the following has been recently used for increasing productivity of super milk cows?

(a) Artificial insemination by a pedigreed bull only

(b) Superovulation of a high production cow only

(c) Embryo transplantation only

(d) A combination of superovulation, artificial insemination and embryo transplantation into a ‘carrier cow’ (surrogate mother)

Answer 1

Correct option: d) A combination of superovulation, artificial insemination and embryo transplantation into a ‘carrier cow’ (surrogate mother)

Explanation:

In superovulation, a high milk yielding cow is induced to shed 4–6 eggs (instead of one) every 6–8 weeks (instead of 20–21 days). The superovulated donor is artificially inseminated with ***** from a quality bull. The embryos developing from the eggs so fertilised are flushed out. These good quality embryos are now transfered to surrogate mother for delivery.